1 /* Copyright (C) 2002,2007 by Red Hat, Incorporated. All rights reserved. 2 * 3 * Permission to use, copy, modify, and distribute this software 4 * is freely granted, provided that this notice is preserved. 5 */ 6 7 #include "fdlibm.h" 8 9 int __fpclassifyf(float x)10__fpclassifyf (float x) 11 { 12 __uint32_t w; 13 14 GET_FLOAT_WORD(w,x); 15 16 if (w == 0x00000000 || w == 0x80000000) 17 return FP_ZERO; 18 else if ((w >= 0x00800000 && w <= 0x7f7fffff) || 19 (w >= 0x80800000 && w <= 0xff7fffff)) 20 return FP_NORMAL; 21 else if ((w >= 0x00000001 && w <= 0x007fffff) || 22 (w >= 0x80000001 && w <= 0x807fffff)) 23 return FP_SUBNORMAL; 24 else if (w == 0x7f800000 || w == 0xff800000) 25 return FP_INFINITE; 26 else 27 return FP_NAN; 28 } 29 30